Fenrir, Fenrisulfr, or Fenris is a Norse mythological wolf. It may also refer to:
Fenrir (moon), a moon of Saturn named after Fenrisulfr Fenris, designation of a battlemech in the science-fiction series BattleTech Fenrir, a monster card in the Yu-Gi-Oh! Trading Card Game Fenris, homeworld of the Space Wolves Space Marine chapter in the Warhammer 40,000 universe Fenrir Inc, Japanese developer of the Sleipnir web browser Fenris Glacier, a glacier in eastern Greenland
Printed media Fenris Ulf, or Maugrim, a character in The Lion, the Witch, and the Wardrobe Fenrir Greyback, a werewolf in the Harry Potter series The Lord of Terror (Oh My Goddess!), from the anime series Oh My Goddess! Fenris, a character in the comic series Lucifer Fenris Wolf (Marvel Comics), a comics character based on the Norse wolf Fenris (comics), the name of two characters and a terrorist organization in the Marvel Comics universe The Fenris Device, a novel/weapon in the Hooded Swan Fenris, the varg's God in the book The Sight
Video games Fenrir, a squadron in the Ace Combat series Fenrir, a military corporation in Danganronpa Fenrir, a boss in Etrian Odyssey Untold: The Millennium Girl Fenrir, a Minmatar freighter in Eve Online Fenrir, the name of Cloud Strife's motorcycle in the Final Fantasy VII series Fenrir, a defending operator in Tom Clancy's Rainbow Six Siege Fenrir, an Omnigear in Xenogears Fenris, a character in Dragon Age II GTC Fenris-class cruiser in the FreeSpace series Fenris, a character in Quest for Glory The Fenris Brood, a faction in StarCraft Get of Fenris, a werewolf tribe in Werewolf: The Apocalypse
See also Fenriz, the stage name of Norwegian musician Leif Nagell